Car-truck.



H. M. PFLAGER.

CAR TRUCK.

APPLICATION FILED IULY 6. 19|?.

. Patented Allg. 27, 1918 2 SHEETS-sneer 1.

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Patented Aug. 27, 1918.

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' .HARRY M. PFLAGER, orsi. LOUIS, MISSOURI, AssIGNoR TocOMMoNwRALrHsTEEL COMPANY, OF sr. LOUIS, MISSOURI, A CORPORATION oF .NEWJERSEY.

CAR-TRUCK v Speciication of Letters Patent. Patented Aug'. 1915.

Applica/dgn iilea'iuly s, 1917. serial No. 179,039.

To all whom t may concern.'

Beit known that I, HARRY M. PFLAGER, acoitizen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement inCar-Trucks,

of which. the following is a full, clear, and exact description, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to thev `.accompanying drawings,Fforming Y part of this specification.

My invention relates generally to railway car truck construction andmore particularly to a new and improveds'pring equalizer arrangement foryieldingly supoporting thetruck Iframe upon the journal oxes, whichlatter it Willbe understood contain the beary: ings for the wheelcarrying axles, and this application should be read and considered in`connection with Patents Numbers 1,080,555,

1,080,556,1,080,557, 1,080,558, and 1,080,559,

issued to the assignee of Clarence H. Howardand myself December9, 1913.l`

The principal objects of my invention are, to provide increasedflexibility of the truck and "equalize-.the distribution of weight uponall ofthe truck wheels ;'t o' provide a comparatively simple truck framesupportwhich, Kby virtue of its arrangement and lconstruction, willbeefective in distributing and absorbing shocks and vibration due stotrack irregularities Aand preventing said shocks and vibration'frombeingtransmitted to the .l oar body, thereby making the riding movementofsaid/,body more easy and gentle; and to dispose the flexible supportinmeans so that it will in noWise interfere wlth the free inspection,repair and Vadjustment of' the brakes and brake rigging associated withthe truck and the wheels thereof. f

' With the foregoing and other objects in view, my invention consists ina plurality of springs, preferably of the semi-elliptic type, mountedupon the journal boxes of the truck, a plurality of substantially rigidor non-elastic equalizing members interposed between the semi-ellipticspring, and a plurality of helical springs interposed between thenon-elastic equalizing members and the truck frame, said helical springsforming a yieldingor resilient fulcrum for the non-elastic equalizingmembers.

My invention further consists in certain novel features of constructionand arrange- Fig. 2 is a side elevational view of the .truck `frame,parts thereof being broken away 'and showing my improved supportingmeans associated therewith;

Fig. 3 is a vertical section taken approximately on the line-3-'3of'Fig. l; Fig. 4 is an elevational View of the end portion of atruckframe and showing a modified' form o f connection between one 70ofthe semi-elliptic springs and said truck frame;v j Fig. 5 is acrosssection taken approXi-. mately n the line 5--5 of Fi'g.4..

Referring bynumerals to 'the acconipany- `715 ing drawings yandparticularly to Figs. 1 to 3 inclusive, designates the wheel 'piece ofan accepted 4type of six l'wheel truck frame,

i the same being preferably of integral con'- struction and includingend pieces 11 and 80 transom members 12.

Rigidly fixed to and depending from the wheel pieces `are vpedestal jaws13 between which are positioned the usual journal boxes 14 which containthe bea-rings for theiends 85 of the wlieelcarrying axles,- 15. `Thewheel `pieces 10 of the truclnframe are preferably hollow and ofbox-like construction in cross section with the bottomwall or plate cutAi away at points between the pedestal jaws for the accommodation ofthejournal boxes .and springxsupportin'g members mounted thereupon. v

The'.outer wall of the wheel piece 1s cut away at suitable points,preferably between lthe pairs of' pedestal jaws to permit the ,readyinsertion or removal of the equahzer ofa leaf sprin 18,' the same beingprefer-*105 'ably of the semi-elliptic type.

Loosely mounted on top of the outer ends of the pair of springs whichare carried by the end pair of journal boxes are anti-friction rollers18, the same bearing against the undersides of'brackets 18h, thelatterbeing arranged within the end portions of the wheel -piece V andythus the truck framel is provided with rolling supports upon the outerends-of the outer pair of semirellip'tic springs. l

Located'betw'een the springs 1S/are sub.;

st'antially rigid or non-elastic. e'qualizing `members 19, the central.portions of which are U-shape in cross section in ordertb form pocketsfor the lower ends of helical springs u L 20 of thecompression type,that is, their normal tendency is to exLpand aniirest compression. Theupper ends of these helical springs bear directly against theundersideofthe topplat'e ofthe wheel piece 10 and consequently each setof springs forms a yielding or resilient fulcrum for the correL spondingequalizing member. The. endl portions of each equali'zing member VAareof inverted U-shape in cross section and said ends are positioned.directly over the ends. of the.

adjacent springs 1 8 and interposed between the ends of said springs andsaid inverted U- shaped ends are anti-friction rollers 21. .In themodified construction illustrated 1n f Figs. 4 and .5, the outer endsofthe pair of the wheel end of each. rod is a plate 22, the same serv;A`ing'as a support for a helical compression ysprings 18 which aremounted on the end pair of journal'boxes are connected to the upper endsof hangers 2 2 preferably in the form of rods whicht depend' downwardthrough suitable slots in thebottom plate of iece, and carried by thelower .sprlng 23. The upper end of this spring/ by arranging the springsand equalizing which V are bears `directly against a bracket or lug 24,the same being positioned against the underside of'the wheel piece.,

In my improved constructionit will .bei

noted that the springs 18 are mountedto vrock-freely upon bearingblocks'16 carried' by the journal boxes of the truck and that thesubstantially rigid equalizing members isposed between the. springs 18have yiel ing and resilient iul'crums upon the wheel pieces'o the truckframe. virtue of this arrangement, a-truck frame supporting structure isprovided which is yielding and .resilient to `a comparatively ,4 'higldegree and; as a result,.service shocks and vibration due to the passageof the tru'ck wheels over rough track, switches, crossings and the likeare vpractically absorbed and eliminated and the-riding' movement of theand gentle. j r l The" improved spring. and equalizer arrangement iseffective in materially increasing thejlexibility ofthe truck'and ualfizingfthe distribution4 of the carried 'welght' upon allof the truckwheels. Furthermore,

'lzin'g member and the truck frame.

j wheel supported c ar body isrendered more easy members within thesubstantially hollow wheel pieces of the truck frame they are racticallylinclosed and consequently\pro ectefd from injury, and further, such ar-It will be readily understood that minor changes in the size, form andconstruction of the various parts of my. improved carl' truck can bemade andfsubstituted forthose hereinshown and described, withoutdeparting' fromthe spirit of my invention, the

scope ofewhich is set Jforth in the appended claims.

I claim:

A1. A liexible support `for railway car trucksl comprising resilientmembers balanced -upon the journal boxes associated with the truckframe, rigid equalizing-members arranged between and supported by saidresilient-members, which rigid equalizing melnlbers are channel-shape,anda plurality of. springs arranged between each equalizing member andthe truck frame.

2. The combination with a car truck frame and its journall boxes, ofsprings supportedby the journal boxes, rigid equalizing members disposedbetween said springs,- l the central portlon of the body of each rigldequalizing4 member being, substantiallyy U- shape in cross section andthe end portions of saidy member .being of inverted U-shape in` crosssection to form vhousin s for the end s of the springs, and a -plura ityof coil sprlngs interposed between each rigld equal- 3. The combination-with a car truck.-

ported by .the `journal boxes, equalizing members disposed betwn'saidsprings, the

ends of which equalizing members are of inverted U-shape in crosssection so as to form housings forV the end portions' of said springs,andl a plurality of springs interposed between said eachequalizingmember and the truck frame, all of which parts are locate'd within thesubstantially hollow ieee of the truck frame.

4. -T e' combination with a railway canv truck frame and its -'ournalboxes, of springs supported by the journal boxes, equalizer membersarranged betweeen and supported ing yielding and resilient fulcrums uponthe truck frame and the ends of said equalizing frame and its journalboxes, of vsprings supl:by said/springs, said equalizer membershavvmembers being of inverted U-shape in cross 13 izer member andsection to form housings for the ends of the springs which are'supportedby the journal boxes. j

.5. The combination with a Y`truck frame and its journal boxes," ofsprings supported p by said journal boxes, equalizer members 6; TheCombination with a truck frame-v and its journal boxes, of springssupported by said journal. boxes, equalizer members disposed between andsupported by said springs, the main body portion of .each

equalizing member being channel shape, and

a ,series of helical springs disposed within the channel shaped portionof each equalizer y memberand the truck frame, all of which' parts aredisposed within the substantially hollow wheel pieee of the truck frame.

7; A flexible support 4for railway car truc-ks comprising alternatelyarranged vsprings andy rigid equ'alizing members, the

saine belng disposed in series with the springs bearing upon the journalboxes, the equalizing members beingdisposed between said springs each ofsaid equalizing members being provided intermediate its end with a`pocket, a series of helical springs occupying said pocket and bearingupon the truck frame, andthe ends of each e'qualizing member beingprovided with pockets adapted to receive' the ends of thel firstmentioned springs.

f n testimony whereof I hereunto aiix my signaturethis 26th day of une,1917.V

" HRRY M. PFLAGER. c

